BIntegrator.h

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// $Id: BIntegrator.h,v 1.1 2005/05/25 15:40:12 cattanem Exp $
#ifndef TRACKTOOLS_BINTEGRATOR_H 
#define TRACKTOOLS_BINTEGRATOR_H 1

// Include files
// -------------
// from Gaudi
#include "GaudiAlg/GaudiTool.h"
#include "GaudiKernel/IMagneticFieldSvc.h"

// from TrackInterfaces
#include "TrackInterfaces/IBIntegrator.h"            // Interface

class BIntegrator : public GaudiTool,
                    virtual public IBIntegrator {
public: 
  BIntegrator( const std::string& type, 
               const std::string& name,
               const IInterface* parent );

  virtual ~BIntegrator( ); 

  StatusCode initialize(); 

 StatusCode calculateBdlAndCenter( const HepPoint3D& beginPoint,
                                   const HepPoint3D& endPoint,
                                   const double tX,
                                   const double tY,
                                   double& zCenter,
                                   HepVector3D& Bdl ) const;

protected:

private:
  StatusCode calculateBdlCenter();

  IMagneticFieldSvc* m_pIMF;   // Pointer to the magnetic field service

  int        m_nSteps;
  HepPoint3D m_centerZ;
  double     m_firstZ;
  double     m_lastZ;

};
#endif // TRACKTOOLS_BINTEGRATOR_H

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